Question

F(x)
= x² + 3x -
-
f(6) = [?]
Be sure to simplify your answer.
XIN

Answer 1

f(6) = 51

Explanation:

Simplify:

Substitute the value of x

`\sf f(x) =x^2 + 3x -(x)/(2)\\\\f(6)=6^2 + 3*6 -(6)/(2)\\\\`

= 36 + 18 - 3

= 51

Answer 2

f(6) = 51

Explanation:

f(x)= x² + 3x - x/2

In order to find f(6) ,we need to substitute

x by 6 in the expression of f :

f(6) = (6)² + 3(6) - (6)/2

= 36 + 18 - 3

= 54 - 3

= 51

Then

f(6) = 51